Substituted 14-desoxy-mutilins

ABSTRACT

WHEREIN EITHER R1 is ethyl or vinyl, N IS AN INTEGER FROM 2 TO 5, X is sulphur, AND PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS AND QUATERNARY SALTS THEREOF. Processes for the preparation of such compounds are described. The compounds are antibiotics with an antibacterial effect.   This invention relates to new pleuromutilins of the formula:

United States Patent [191 Egger et al.

[451 Nov. 11, 1975 l SUBSTITUTED l4-DESOXY-MUTILINS [75] Inventors: Helmut Egger; Hellmuth Reinshagen, both of Vienna, Austria [73] Assignee: Sandoz Ltd., Basel. Switzerland [22] Filed: Dec. 26, 1973 [21] Appl. No.: 427,5[4

[30] Foreign Application Priority Data Oct. 5, 1971 Switzerland 14450171 Oct. 5, i971 Switzerland ..l4451/7l May 25, 1972 Switzerland ..7740/72 May 25, I972 Switzerland ..7738/72 May 25, I972 Switzerland ..7739/72 Related US. Application Data [63] Continuation-in-part of Ser. No. 294,642. Oct. 3.

l972. abandoned.

[52] US. Cl 260/481 R; 260/243 B; 260/247.l; 260/268 BC; 260093.56; 260/326.8l;

[Sl] Int. Cl. C07C 143/12 [58] Field of Search 260/268 TR, 468 .l, 481 R [56] References Cited UNITED STATES PATENTS 2.524.856 l0/l950 Schnider et al. 260/287 R 2.634.292 4/l953 Hellerbach 260/287 R FOREIGN PATENTS OR APPLICATIONS 2.036.027 2/l97l Germany 260/48l R OTHER PUBLICATIONS Birch, Chemistry and industry, 1963, pp. 374-375. Burger, Medicinal Chemistry, i965, pp. 42. 497. Amchel, J. of Biological Chemistry," Vol. 199, 1952, pp. 133-139.

Primary EmminerRichard J. Gallagher Assistant Examiner-David E. Wheeler Attorney, Agent. or FirmGerald D. Sharkin; Robert S. Hovor; Thomas O. McGovern [57] ABSTRACT This invention relates to new pleuromutilins of the formula:

wherein 14 Claims, No Drawings 1 2 SUBSTITUTED l4-DESOXY-MUTILINS R, IS as defined above. This application is a continuation-in-part of co-pendthe number 1 ing application Ser. No. 294,642, filed Oct 3rd, 1972 5 s is alkyl of 110 carbon atoms. y y y 1 now abandoned. to 4 carbon atoms, (acyloxy of 2 to 5 carbon This invention relates to new pleuromutilins. lltomsllllkyl of 1 t0 4 Carbon atoms or (benzoyloxy' In accordance with the invention there are provided l y of l to 4 r atoms new pleuromutilins of formula I. X the group =N R4 and H\ R O CO 2 -C H X- CH O CH 2 2 n N 3 R 3 on R together with R," forms an ethylene bridge be- 1 ethyl yL tween both nitrogen atoms,

:2 is an integer from 2 to 5, and acid addition salts and quaternary salts thereof. X sulphull Further, in accordance with the invention a coma group pound of formula I and acid addition salts and quaternary salts thereof may be obtained by processes com- 1 3U prising a. reacting a compound of formula ll], -Y

O CH 2 O SC: R 6 O CH or a group =N-RJ, wherein either Y and Z are both sulphur, or Ill one of Y and Z is oxygen and the other is sulphur,

and R is hydrogen or a group of formula I], CH 3 O-CO-CH C H 3 O H 3 3 wherein 11 R is as defined above, and R R is alkyl or aryl, with a compound of formula IV,

I R2 3 H-X (CH-,- |,-N iv CH O wherein n is as defined above.

, wherein X [S sulphur or a group R is as defined above, each of R and R is alkyl of l to 10 carbon atoms, or R and R together with the nitrogen atom form a heterocycle of 5 to 7 ring members containing one nitrogen atom or one nitrogen atom and a further wherein hetero member selected from sulphur oxygen and so Y' and Z have the same significance as Y and Z. de-

a group fined above, provided Z is sulphur, and wherein each of R is alkyl of l to 5 carbon atoms or hydroxyalkyl of and is l l f 1 to 1() Carbon atoms or 1 t0 4 Carbon atoms, R and R together with the nitrogen atom form a and 3 g h With the nitrogen mom form 3 P ,5 heterocycle of 5 to 7 ring members containing one peruzinyl radical. the Second ni r gen 310m of nitrogen atom or one nitrogen atom and a further which is substituted by a radical R hetero member selected from sulphur, oxygen and whereby a group z,

R is (acyloxy of 2 to 5 carbon atoms)alkyl of l to wherein 4 carbon atoms or (benzoyloxy)alkyl of l to 4 car- R is as defined above, to produce a pleuromutilm of bon atoms. or formula lu,

l "2 O-CO-CH -x (CH -N 2 2 O C H R l a wherein H wherein R n, X, R and R are as defined above, or R n. R and R are as defined above, and X" is the b. reacting a compound of formula 1]], indicated group =NR above. either with a compound of formula V,

R wherein r R is as defined above or H .r\. (H r- 4 i 20 2. to produce a pleuromutilin of formula lb,

C H C H 2 O-CO-(IH -N N-R 5 H CH CH OH C H 3 wherein wherein n R and R are as defined above, or with a com- R, and R are as defined above, or pound of formula Va,

c. reacting a compound of formula Illa,

" Ills CH OH R Y and Z are as defined above, with a compound 55 of formula V],

wherein R0 R is as defined above, w l. to produce a pleuromutilin of formula lb, I I.

R 2 o-co-cu x (CH 2 2 n O C H 3 R I u 3 II: I I

0 CH H to produce a pleuromutilin of formula it.

R n, R R;,', Y and Z are as defined above, or d. reacting a compound of formula [0,

.tv I2 N o co cu x (m i v o ca a n In en H wherein R X and n are as defined above,

R and R together with the nitrogen atom form a piperazinyl radical, the second nitrogen atom of which is substituted by a radical R,-,', whereby R is hydroxyalkyl of l to 4 carbon atoms,

or reacting a compound of formula le',

R, and R are as defined above, with a compound of formula Vll,

wherein B is alkoxycarbonyl, chloroor bromo-formyl, or a group R;CO-O-CO-, and

R is alkyl of l to 4 carbon atoms or phenyl, l. to produce a pleuromutilin of formula Id,

m 2 o-co-cu -x(cH 1 0 CH 2 2 m 5 3 '3 Id a ca on wherein R n and X are as defined above, and

R and R;,' together with the nitrogen atom form a piperazinyl radical, the second nitrogen atom of which is substituted by a radical R,-,". as defined above, or

. to produce a pleuromutilin of formula ld'.

c H cu 1 u O-C0-CH2N N-R c "3 c H c H :5 2

It i

c H OH wherein R, and R are as defined above, and, if desired, converting the resulting compounds of formula 1 into an acid addition salt or quaternary salt.

Process (a) may, for example, be effected by dissolving an acid addition salt of a compound of formula IV, eg a hydrohalide, or the free base in a solution of sodium in an anhydrous lower alcohol, e.g. ethanol. A solution of a compound of formula lll in an inert solvent, e.g. an aliphatic ketone such as ethylmethyl ketone or acetone, is then added to this solution. The reaction is preferably effected at a temperature between 5 room temperature and the boiling temperature of the reaction mixture, especially at 25 to C. The reaction time under preferred conditions is from 2 to l2 hours. The process may suitably be carried out under an inert atmosphere. e.g. nitrogen. R in the compound of formula lll may be, for example, alkyl of l to 6 carbon atoms or benzyl, although a wide varlety of radicals may be used.

Process (b) may, for example, be effected by adding a solution of a compound of formula Ill in an inert sols vent, e.g. a lower aliphatic ketone such as ethylmethyl ketone or acetone, to a compound of formula V or Va.

An acid-binding agent, e.g. a tertiary base such as triethylamine or pyridine, is conveniently added to the reaction mixture, and the reaction is conveniently carried out at an elevated temperature, preferably at the boiling temperature of the reaction mixture. The reaction usually has a duration of several hours and is generally concluded after 6 to 12 hours. When the reaction is effected with a primary amine, i.e. with a compound of formula V, then condensation products from one mol of a compound of formula V with one or two mols of a compound of formula III are preponderantly formed, depending on the reaction conditions (mol ratio of the reactants, reaction temperature and duration, addition and kind of reactant used, etc. i.e. compounds of formula lb wherein R is hydrogen in the case of a mol ratio of lzl. and R is the radical of formula ll in the case of a mo] ratio of 1:2, result. Any mixtures of the two condensation products which may be obtained may be separated in known manner.

Process (c) may, for example. be effected by dissolving a compound of formula lllu in an inert solvent. e.g. an aliphatic ketone such as ethylmethyl ketone, or in a lower alcohol such as methanol or ethanol, subsequently adding a compound of formula VI, and allowing the reaction mixture to react, optionally in the presence of a base. e.g. an alkali metal carbonate such as potassium carbonate. The reaction is preferably effected at a temperature between room temperature and the boiling temperature of the reaction mixture and has a duration, e.g., of 2 to 20 hours.

Process ((1) may, for example, be effected by allowing a compound of formula or It to react in a solvent with an acid derivative of formula Vll for some time. Preferably the acid derivative is used as solvent alone or in admixture with an inert solvent, e.g. a chlorinated hydrocarbon such as dichloromethane. The reaction product may be isolated from the reaction mixture in known manner and optionally purified.

The compounds of formula I may be converted into their acid addition salts and vice versa.

The corresponding quaternary salts may be obtained from the compounds of formula I in accordance with known methods.

The alkyl groupd represented by the symbols R and R or R and R preferably contain l to 8 carbon atoms; the lower alkyl groups represented by R, preferably contain 1 to 3 carbon atoms.

The lower hydroxyalkyl groups represented by R R and R preferably contain two carbon atoms.

The lower acyloxy group contained in R or R preferably signifies the acetyl group. The lower alkyl groups contained in the acyloxyalkyl or benzoyloxyalkyl radicals of R or R preferably contain 2 carbon atoms. The number n preferably denotes 2 or 3.

The starting materials of formula lllb,

O.CO.CH .O.SO .ll6

cn=cn ci-i CH3 OH wherein R. is as defined above; are known. The starting materials of formula lllc',

O.CO.CH .O.SO .R

R is as defined above, may be obtained by a. reacting the compound of formula VII] VIII c H3 on with a compound of formula IX,

ASO R.

wherein A and R are as defined above, or

B. reducing a compound of formula lllb.

The reaction in accordance with process a) can be effected in an inert solvent, e.g. an aromatic hydrocarbon such as toluene or benzene, preferably, however, in a solvent simultaneously acting as acidbinding agent. e.g. pyridine. p-Toluene sulphochloride may. for example, be ueed as compound of formula IX. The reaction may, for example, be effected at a temperature between -l5 and l()C and has a duration between 2 and 4 hours.

The hydrogenation of a compound of formula lllb in accordance with process (/3) is conveniently effected by the action of hydrogen in the presence of a hydrogenation catalyst, e.g. a palladium or platinum charcoal catalyst, in an inert solvent, e.g. ethyl acetate, and at room temperature.

The starting materials of formula ll] a may be obtained by reacting a compound of formula III with a compound of formula X,

ZH M.-Y X

N(CH2),,SH lV-a wherein n, R and R are as defined above, may be obtained by reaction of a compound of formula VI with thiourea and subsequent alkaline hydrolysis of the resulting complexes. The compounds of formula W1),

wherein R and R are as defined above. with ethylene sulphide. The compounds of formula We.

a YH

Qn Q wherein R R;,', n. Z and Y are as defined above. may be obtained by reaction of a compound of formula V1 with a compound of formula Xu.

wherein Z. Y and Me are as defined above.

Insofar as the production of the starting materials is not particularly described, these are known or may be produced in accordance with known processes. or in a manner analogous to the processes described herein or to known processes.

The compounds of formula 1 are useful because they possess pharmacological activity in animals. In particular the compounds are useful as antibiotics with an antibacterial action. as indicated by tests in vitro with the agar plate test. in which an inhibiting effect was obtained at a concentration of approximately 0.002 to 5 pg/ml. and in vivo tests in mice infected with different strains of bacteria. on subcutaneous or oral administration of 6 to 103 mg/kg animal body weight of the compound, and by inhibition tests with mycoplasms at concentrations of approximately 0.008 to 2.5 pg/ml. Action against the organisms Streptococcus aronson. Streptococcus haem., Staphylococcus aureus, M. arrhriridis, M. bovigenimlimn, M. bovimasritidis, M. boi'irhinis, M.sp., M. canis, M. felis, M. fermenmns. M. gallium-um, M. gallisepricum, A. granularmn, M. hominz's. M. hyorlu'nis. A. Iaidlmrii, M. meleagridis, M. nem'ulyticum, M. penumoniu and M. hyopenumoniue is specifically indicated.

For the above-mentioned use. the dosage administered will. of course. vary depending upon the compound employed, mode of administration and treatment desired. However, in general. satisfactory results are obtained when administered at a daily dosage of from about 5 to 100 mg/kg animal body weight. conveniently given in divided doses two to four times a day, or in sustained release form. For the larger mammals. the total daily dosage is in the range of from about 50 to 1000 mg. and dosage forms suitable for oral adminis tration comprise from about 10 to 500 mg of the compound admixed with a solid or liquid pharmaceutical carrier or diluent.

The compounds of formula 1 are indicated for the prophylaxis or therapy of microorganism infections in domestic animals. especially in pigs and poultry and are conveniently administered in feedstuffs or in drinking water. The dosage will of course vary depending upon the size and age of the animal and the effect desired; for example for prophylactic treatment relatively low doses would be administered over a long time. Preferred doses in drinking water are from 0.001 to 0.1 percent weight by volume, particularly 0.025 to 0.075 percent. and in foodstuffs from to 1000 g/metric ton. particularly 200 to 600 g/ton. lt is preferred to administer the active compound to hens in drinking water. and to pigs in the foodstuff.

Compounds which exhibit particularly interesting activity are l4-desoxy-l4-{[2-(4-methyl)piperazino] ethylmercaptoacetoxy} mutilin and l4 desoxy-l4-{[( 2- hydroxyethyl )piperazino ethylmercaptoacetoxy} mutilin. These compounds are active in tests in bacterially infected mice at dosages of 5 to 100 mg/kg animal body weight and are active as additives to drinking water for chickens at a concentration of 0.05 and 0.10 percent weight by volume.

The compounds of formula I may be administered in pharmaceutically acceptable acid addition or quaternary ammonium salt form. Such salt forms possess the same order of activity as the free bases and are readily prepared in conventional manner. Suitable such salt forms include salts with organic acids such as maleic. fumaric or tartaric acid. with mineral acids such as hydrochloric, hydrobromic or sulphuric acid, and with quaternizing agents such as methyl chloride or iodide.

The invention also provides a pharmaceutical composition comprising a compound of formula 1. in free base or in pharmaceutically acceptable acid addition salt or quaternary ammonium salt form. in association with a pharmaceutically acceptable carrier or diluent. A suitable phannaceutical form is a capsule. or a sterile injectable or instillation solution, containing the active compound.

in the following non-limitative Examples all temperatures are indicated in degrees Centigrade.

EXAMPLE 1 l4-Desoxyl 4-[ Z-dimethylaminoethyl) mercaptoacetoxylmutilin [process a)] 2.70 g of dimethylaminoethanethiol hydrochloride, which has been dried over phosphorus pentoxide. are added portionwise in an atmosphere of nitrogen to a solution of 1.40 g of sodium in 50 cc of absolute ethanol. 10.60 g of l4-desoxy-l4-tosyloxyacetoxymutilin are subsequently dissolved in 30 cc of ethylmethyl ketone while heating and are added dropwise with stirring. The reaction mixture is stirred at room temperature for 4 hours and at 5055 for 30 minutes. The mixture is then concentrated almost to dryness, the residue is dissolved in ethyl acetate. and the product is converted into the aqueous phase as hydrochloride by extracting with 3 portions of 2 N hydrochloric acid. The base may again be extracted therefrom with ethyl acetate after adjusting the pH to 11 by the addition of sodium hydroxide. The ethyl acetate solution is washed twice with water. dried over magnesium sulphate and concentrated by evaporation in a vacuum.

The hydrochloride is obtained therefrom by concentrating by evaporation with methanolic hydrochloric acid in a vacuum or by taking up in methylene chloride,

adding an equivalent amount of ethereal hydrochloric acid and concentrating by evaporation in a vacuum. After drying over potassium hydroxide the compound has a softening point of 95.

The trimethyl ammonium iodide is produced by boiling at reflux 870 mg of l4-desoxy-l4-[(2-dimethylaminoethyl)mercaptoacetoxyimutilin in cc of methanol with 3 cc of methyl iodide for 1 hour. The solution is then strongly concentrated. ether is added until it becomes turbid. and it is strongly cooled. Precipitation is completed by further addition of ether, the precipitate is filtered with suction. is thoroughly washed with ether and dried over phosphorus pentoxide. Softening point l50-l60.

For the production of the trimethyl ammonium chloride. an ion exchange resin column with I g of anion exchange resin (Cl form. grain size 0.15-03 mm) is washed with distilled water until no chloride can be detected in the eluate. The eluate is sucked to dryness. reduced to slime thrice with a mixture of methanol and methylene chloride (41l) and washed. 35 g of the trimethyl ammonium iodide are dissolved in 300 cc of the above solvent mixture and are slowly allowed to drop through the exchange resin column. The solvent is evaporated. whereby the trimethyl ammonium chloride is obtained (iodine content 0.2 7r). As opposed to the trimethyl ammonium iodide, it is slightly water-soluble. M.P. l46l50.

EXAMPLE 2 l4-Desoxy- 14-[( 2-piperidinoethyl mercaptoacetoxy lmutilin [process a) l 0.63 g of sodium are dissolved in 50 cc of absolute ethanol. 2.17 g of piperidinoethanethiol hydrochloride are added in portions to the ethylate solution in an atmosphere of nitrogen, and then 6.4 g of l4-desoxyl4- tosyloxyacetoxymutilin. dissolved in 30 cc of ethyl methyl ketone, are add ed dropvvise. The reaction mixture is stirred at room temperature for 4 hours. Working up is effected as described in Example 1. The crude product is purified by chromatography on silica gel with a mixture of methanol/chloroform (2:1) and is converted into the hydrochloride with hydrochloric acid in methanol; after triturating with ether and drying, the hydrochloride has a softening point of 8892.

EXAMPLE 3 l4-Desoxy- 14- 2-diethylaminoethyl) mercaptoacetoxyld ihydromutilin [process a )1 5.35 g of l4-desoxyl 4-tosyloxyacetoxydihydromutilin are dissolved in 15 cc of warm ethylmethyl ketone. and the solution is added dropwise in an atmosphere of nitrogen to a well stirred solution of l.70 g of diethylaminoethanethiol hydrochloride in a previously prepared sodium ethylate solution (from 650 mg of sodium in cc of absolute ethanol). After stirring at room temperature for 4 hours and heating to 5055 for minutes. working up is effected as described in Example l. The hydrochloride has a softening point of 4548.

The diethylmethyl ammonium iodide may be obtained in a manner analogous to that described in Example l. Softening point ll5-l 18.

EXAMPLE 4 l4-Desoxyl 4-[ 2-diethylaminoethyl) mcrcaptoacetoxy]mutilin [process 21)] L30 g of sodium are dissolved in 50 cc of absolute ethanol. 3.40 g of finely pulverized diethylaminoe thanethiol hydrochloride, dried over phosphorus pentoxide. are added portionwise to the resulting solution in an atmosphere of nitrogen. A solution of I060 g of l4-desoxyl 4-tosyloxyacetoxymutilin in 30 cc of ethylmethyl ketone is subsequently added dropwise while stirring. The reaction solution is stirred at room temperature for a further 4 hours. is subsequently kept at 5055 for 30 minutes and is then concentrated almost to dryness. The residue is taken up in ethyl acetate and the base is extracted therefrom with 3 portions of 2 N hydrochloric acid. The base is again taken up in ethyl acetate from the aqueous phase which has been rendered alkaline (pH ll) with sodium hydroxide. The ethyl acetate layer is finally washed twice with water, dried over sodium sulphate and concentrated by evaporation in a vacuum.

The hydrochloride. having a softening point of about 100, and the diethylmethyl ammonium iodide. having a softening point of 1l0l 15, may be obtained in a manner analogous to that described in Example I. 30 g of crude l4desoxyl 4-[ 2-diethylaminoethyl )mercaptoacetoxylmutilin is dissolved in 50 ml of ether. This solution is admixed with a solution of 8.5 g fumaric acid in l00 ml of warm methanol (about 30 to 40). and the mixture carefully concentrated under vacuum. Upon dilution with portions of a mixture of ether and petroleum ether (2: l crystallisation of the salt takes place rapidly, and this is completed by storing in a refrigerator for 8 to 12 hours. After suction filtration and washing with ether/petroleum ether, the product is dried over silica gel at 20 under vacuum. The hydrogen fumarate is in the form of the methanol solvate. The product can be freed from solvent by pulverisation followed by drying at 80 under vacuum. to give a product of m.p. from I 10 to l l5C.

EXAMPLE 5 l4-Desoxyl 4-[ 2-morpholinoethyl) mercaptoacetoxy mutilin [process a A sodium ethoxide solution is prepared from 0.21 g of sodium and 20 cc of absolute ethanol, and 0.80 g of morpholinoethanethiol hydrochloride are then added portionwise in an atmosphere of nitrogen. A solution of 2.12 g of l4-desoxy-l4-tosyloxyacetoxymutilin in l0 cc of ethylmethyl ketone is added dropwise to this mixture while stirring. and stirring is continued at room temperature for l2 hours. The mixture is then strongly concentrated in a vacuum. ethyl acetate and 2 N hydrochloric acid are added. and after separating the layers extraction is again effected twice with 2 N hydrochloric acid. The hydrochloric acid solution is then made alkaline with sodium hydroxide, and the precipitated free base is taken up in ethyl acetate. The ethyl acetate solution. which has been dried over magnesium sulphate. is concentrated by evaporation in a vacuum. Purification is effected by chromatography on silica gel with a mixture of chloroform/methanol 1: l) as eluant.

EXAMPLE 6 l4-Desoxyl 4- Z-diethylaminoethyl) mercaptoacetoxy[mutilin [process a)] 10.0 g of sodium are first dissolved in 350 cc of absolute ethanol, and after cooling, 24.0 g of well dried diethylaminoethanethiol hydrochloride are added portionwise to the solution in an atmosphere of nitrogen. A solution of 79.5 g of l4-desoxy-l4-tosyloxyacetoxymutilin in 250 cc of ethylmethyl ketone is subsequently added dropwise while stirring. After stirring at room temperature for 4 hours, the reaction solution is concentrated almost to dryness in a vacuum, is taken up in ethyl acetate and carefully washed with ice water. The ethyl acetate solution is then dried over magnesium sulphate and concentrated by evaporation in a vacuum. The residue of the crude base is dissolved in 80 cc of methylene chloride, and 40 cc of 5,8 N hydrochloric acid in ether are added. The solvent is evaporated, the evaporation residue is taken up in 120 cc of methanol, the solution is poured into 700 cc of distilled water and is extracted times with a total of 700 cc of ether. The aqueous solution of the hydrochloride, which is homo geneous in accordance with thin layer chromatography, is filtered and then concentrated in a vacuum at a bath temperature of approximately 30", whereby a foamy product is obtained, which is dried in a vacuum at 60 over potassium hydroxide.

EXAMPLE 7 14-Desoxy- 1 4-[( 2-diisopropylaminoethyl) mercaptoacetoxylmutilin [process a)] 1.54 g of diisopropylaminoethanethiol are added to a solution of 0.35 g of sodium in 25 cc of absolute ethanol in an atmosphere of nitrogen. A solution of 5.33 g of l4-desoxy-14-tosyloxyacetoxymutilin in cc of ethylmethyl ketone is added dropwise, stirring is effected for 5 hours at room temperature. and the reaction solution is then evaporated to dryness in a vacuum. The residue which has been taken up in ethyl acetate is washed 5 times with water, dried over magnesium sulphate and again evaporated to dryness. The residue is taken up in 30 cc of chloroform, 6 cc of 5.8 N hydrochloric acid in ether are added while cooling with ice, whereupon the solvent is removed in a vacuum and the foamy residue is digested carefully thrice with absolute ether. The ether is discarded. After this purification the hydrochloride is homogeneous in accordance with thin layer chromatography (silica gel G, chloroform/methanol 1:2).

EXAMPLE 8 l4-Desoxyl4-[( 2-di-n-butylaminoethyl) mercaptoacetoxy1mutilin [process a)] 1.80 g of di-n-butylaminoethanethiol are reacted with 0.35 g of sodium in cc of absolute ethanol and 5.33 g of l4-desoxyl4-tosyloxyacetoxymutilin in 15 cc of ethylmethyl ketone in a manner analogous to that described in Example 6, and conversion the hydrochloride is effected. This is taken up in 15 cc of methanol, poured into 100 cc of water and subsequently extracted 5 times with a total of 100 cc of ether. After filtration the aqueous solution is concentrated by evaporation in a vacuum at a bath temperature of approximately The product is homogeneous in the thin layer chromatogram (silica gel G, benzene/ethyl acetate 2:1 and chloroform/methanol 1:2) and after drying in a vacuum has a softening point of 8590.

EXAMPLE 9 14-Desoxy-14-[2-(hexahydro-lH-azepin-l-yl ethylmercaptoacetoxylmutilin [process a)] 1.60 g of 'l-(hexahydro-lH-azepinyl) ethanethiol are reacted with 0.35 g of sodium in 25 cc of absolute ethanol and 5.33 g of l4-desoxy-l4-tosyloxyacetoxymutilin in 15 cc of ethylmethyl ketone in a manner analogous to that described in Example 8, and conversion into the hydrochloride is effected. Purification is effected by taking up in 15 cc of methanol, diluting with 100 cc of water and extracting 5 times with 100 cc amounts of ether. Concentration of the aqueous hydrochloride solution by evaporation at a bath temperature of 30 yields the pure hydrochloride in the form of a white powder. Softening point 1 10l20.

EXAMPLE l0 l4-Desoxy- 14- {[2-( 4-methyl )piperazino] ethylmercaptoacetoxy} mutilin [process a)] 4.24 g of l4-desoxy-l4-tosyloxyacetoxymutilin, dissolved in 12 cc of ethylmethyl ketone, are added dropwise in an atmosphere of nitrogen to a solution of 1.22 g of (4-methylpiperazino)ethanethiol and 0.28 g of sodium in 20 cc of absolute ethanol. and the mixture is stirred at room temperature for 4 hours. The solvent is subsequently removed in a vacuum. the residue is taken up in ethyl acetate and extraction is effected thrice with water. The ethyl acetate solution is extracted thrice with 20 cc amounts of 2 N hydrochloric acid, the aqueous phase is made alkaline with a 6 N sodium hydroxide solution while cooling, and the liberated base is ex tracted with ethyl acetate. The solution which has been dried over magnesium sulphate is evaporated, whereby the free base is obtained and is converted into the dihydrochloride in a manner analogous to that described in Example 9. The crystalline dihydrochloride has a MP. of l85-188. l g of crude l4-desoxy-l4- {[2-(4- methyl )pipe razino] ethyl-mercaptoacetoxy) mutilin is dissolved in 10 ml dichloromethane and mixed with a solution of 0.50 g fumaric acid in warmed methanol. On addition of portions of ether the bis-hydrogen fumarate precipitates. After suction filtration, washing and drying (at 40C over silica gel and under vacuum) the product has a melting point from 170 to 176C.

EXAMPLE 1 l l4-Desoxy- 14- 2-hydroxyethyl)piperazino] ethylmercaptoacetoxy} mutilin [process a)] 1.81 g of (4-hydroxyethylpiperazino) ethanethiol are added to a solution of 0.35 g of sodium in 25 cc of absothe solvent is removed lute ethanol in an atmosphere of nitrogen, wherupon a solution of 5.35 g of l4-desoxy-l4-tosyloxyacetoxymutilin in 15 cc of ethylmethyl ketone is added dropwise. After stirring at room temperature for 4 hours, in a vacuum, the residue is taken up in 50 cc of methylene chloride, washed 5 times with water and dried over magnesium sulphate. 5 cc of 5.8 N hydrochloric acid in ether are added to the solution, and upon adding a further amount of ether the hydrochloride precipitates in crystalline form. Softening point 192l97.

5.50 g of the crude base of the title compound are taken up in cc of absolute dichloromethane, and a 15 solution of 2.40 g of maleic acid in 15 cc of absolute methanol is added. Absolute ether is slowly added. whereby the bis( hydrogen maleate) precipitates in crystalline form; it is filtered with suction and washed with etherv The bis( hydrogen maleate) has a MP of l37l39.

EXAMPLE l2 l4-Desoxyl 4-[ Z-dimethylaminoethyl) mercaptoacetoxy]dihydromutilin [process 21)] The process is effected as described in Example 6, and 60 g of l4-desoxyl 4-tosyloxyaeetoxydihydromutilin, 7 g of sodium and 13.5 g of dimethylaminoethanethiol hydrochloride are reacted.

The trimethyl ammonium iodide is produced from the base in a manner analogous to that described in Example l. Softening point l23l28.

The trimethyl ammonium chloride may be obtained from the trimethyl ammonium iodide in a manner analogous to that described in Example 1.

EXAMPLE 13 l 4-Desoxyl 4-[3-( diethylaminoethylmercapto phenylmercaptoacetoxy]mutilin [process a)] 0.40 g of 3-(diethylaminoethylmercapto) thiophenol are dissolved in a solution of 37 mg of sodium in cc of absolute ethanol in an atmosphere of nitrogen; 1.02 g of l4-desoxy-l4-tosyloxyacetoxymutilin, dissolved in 10 cc of ethylmethyl ketone, are then added dropwise. The mixture is stirred at room temperature for 3 hours and is boiled at reflux for 1 hour. The solvent is subsequently removed by evaporation in a vacuum, the residue is taken up in ethyl acetate, and extraction is effected thrice with water. The ethyl acetate solution, which has been dried over magnesium sulphate, is concentrated by evaporation, taken up in a small amount of chloroform, a small excess of hydrochloric acid in ether is added, and concentration by evaporation is again effected. After taking up the residue in a small amount of ethanol, dilution is effected with water and extraction is effected 4 times with ether. The filtered aqueous solution is finally concentrated by evaporation in a vacuum at 30 and yields a glassy hydrochloride.

EXAMPLE l4 l4-Desoxy-14-l(2-pyrrolidinoethyl) mercaptoacetoxylmutilin [process a)} 5.33 g of l4-desoxy-l4-tosyloxyacetoxymutilin, dissolved in 15 cc of ethylmethyl ketone, are added dropwise to a solution of L26 g of pyrrolidinoethanethiol and 0.35 g of sodium in cc of absolute ethanol in an atmosphere of nitrogen. The reaction mixture is stirred at room temperature for 4 hours. The solvent is subsequently removed in a vacuum, and working up is effected in a manner analogous to that described in Example 6.

EXAMPLE l5 l4-Desoxyl4-[( 3-dimethylaminopropyl) mercaptoacetoxylmutilin [process a)] 2.14 g of l4-desoxy-l4-tosyloxyaeetoxymutilin are dissolved in IQ cc of ethylmethyl ketone, and the solution is added dropwise to a previously prepared solution of 0.48 g of 3-dimethylaminopropylmercaptan and 0. [4 g of sodium in 10 cc of absolute ethanol in an atmosphere of nitrogen. The mixture is stirred at room 16 temperature over night. the solvent is removed. working up is effected as described in Example 6, and purification is effected hy extracting the aqueous hydrochloride solution with ether. A white pul erulent hydrochloride is obtained.

EXAMPLE l6 [process 21)] The following compounds may be obtained in a manner analogous to that described in the previous Examples with the use of the corresponding amounts of the appropriate starting materials:

a. l4-desoxyl 4-[ 3-di-n-butylaminop ropyl )mercaptoacetoxyl mutilin. the hydrochloride of which has a softening point of 4548;

l4-desoxyl4-[ Z-di-n-butylaminoethyl )mercaptoacetoxy] dihydromutilin. the hydrochloride of which has a softening point of approximately 90; l4-desoxy l 4- 2-di-( Z-ethylhexyl )aminoethyl] mercaptoacetoxy}mutilin. the hydrochloride of which has a softening point of approximately 60; l4-desoxyl 4[( Z-thiomorpholinoethyl )me rcaptoacetoxy] mutilin, the hydrochloride of which has a softening point of l20l25;

l4-desoxyl4- 2-( 4-methyl )piperazino] ethylmercaptoacetoxy}dihydromutilin, the crystalline dihydrochloride of which has a MP. of 220225; f. l4-desoxyl 4- Z-hyd roxyethyl )piperazino] ethylmercaptoacetoxy} dihydromutilin. the dihydrochloride of which has a softening point of l-l40.

EXAMPLE l7 l4-Desoxy-3-morpholino-propylamine di(acetic acid l4-mutilyl ester) [process b)] 5.33 g of l4-desoxy-l4-tosyloxyacetoxymutilin are dissolved while heating in 25 cc of ethylmethyl ketone, and the solution is slowly added dropwise to a boiling mixture of L44 g of 3-morpholinopropylamine and [.55 g of triethylamine. The reaction mixture is boiled at reflux for l2 hours. is subsequently concentrated by evaporation in a vacuum. the residue is taken up in ethyl acetate and the basic portions are extracted therefrom with 2 N hydrochloric acid. The bases are again liberated from the acid aqueous solution with sodium hydroxide and are taken up in ethyl acetate. After drying over sodium sulphate and concentrating by evaporation, the residue is separated chromatographically. Silica gel having a grain size of 0.05 to 0.2 mm is used as adsorbent, and methanol/chloroform (2zl) as eluant. This chromatographic separation yields two primary fractions; the material which migrates more rapidly was identified as the title compound by spectroscopic and analytic examination. The dihydrochloride has a softening point of l65.

EXAMPLE l8 l4-Desoxyl 4-[( 3 -morpholinopropyl) aminoacetoxylmutilin [process b)] EXAMPLE 19 l 4-Dcsoxy-14-[ (2-diethylaminoethyl aminoacetoxy ]mutilin [process b) I 2.12 g of l4-desoxy-l4-tosyloxyacetoxymutilin are dissolved in cc of warm ethylmethyl ketone, the solution is added dropxvise to a boiling mixture of 0.98 g of diethylaminoethylamine and 0.60 g of triethylamine. as described in Example 17. and the mixture is boiled at reflux for 7 hours. Isolation of the base is effected as described in Examples 1. 2 and 17. Crystals having a MP. of l08l 12 are obtained. The dihydrochloride, which can be obtained using hydrochloric acid in meth anol. has a softening point of 150.

EXAMPLE l4-Desoxy- 1 4-( 4-hydroxyethylpiperazinoacetoxy mutilin [process b )1 0.50 g of N-hydroxyethylpiperazine and 0.60 g of triethylamine are dissolved in 5 cc of absolute ethanol. whereupon a solution of 2.12 g of 14-desoxy- 1 4- tosyloxyacetoxymutilin in 10 cc of ethylmethyl ketone is added dropwise in an atmosphere of nitrogen, and the reaction solution is subsequently boiled at reflux for 6 hours. The solvent is subsequently removed in a vacuum, and working up is effected as described in Example 10. The dihydrochloride has a M.P. of l33-137.

EXAMPLE 2l l4-Desoxy- 14- 4-( Z-dimethylaminoethoxy) phenylmercapto]acetoxymutilin [process c )1 100 mg of l4-desoxy-l4-(4-hydroxyphenylmercapto)acetoxymutilin are dissolved in 10 cc of ethylmethyl ketone, and after the addition of mg of dimethylaminoethyl chloride hydrochloride. 150 mg of finely pulverized dry potassium carbonate and 30 mg of potassium iodide, the mixture is boiled at reflux for 1 1 hours. The solvent is subsequently removed by distillation, the residue is taken up in ethyl acetate, washed thrice with water, dried over sodium sulphate and concentrated by evaporation. Isolation is effected by preparative thin layer chromatography on silica gel with chloroformlmethanol (1:2) as eluant.

EXAMPLE 22 l4-Desoxyl 4-[ 4-( 3-dimethylaminopropoxy phenylmercapto]acetoxymutilin [process c )1 100 mg of l4-desoxy-l4-( 4-hydroxyphenylmercapto)acetoxymutilin are dissolved in 3 cc of ethylmethyl ketone, 55 mg of sodium methoxide in 2 cc of methanol are first added, and then mg of 3-dimethylaminopropyl chloride hydrochloride are added. The mixture is stirred at room temperature in an atmosphere of nitrogen for 3 hours and is then boiled at reflux for 14 hours. After removing the solvent by evaporation, the residue is taken up in ethyl acetate, washed thrice with water, dried over sodium sulphate and concentrated by evaporation. Purification is effected by thin layer chromatography on silica gel with chloroform/methanol (1:2) as eluant.

EXAMPLE 23 14-Desoxyl4-[4-( 2-diethylaminoethoxy phenylmercapto]acetoxymutilin [process c )l 960 mg of l4-desoxy-14-(4-hydroxyphenylmercapto)acetoxymutilin are dissolved in 20 cc of absolute methanol, mg of sodium methoxide are subsequently added. and the mixture is evaporated to dryness in a vacuum. The evaporation residue is taken up in a mixture of 4 cc of water and 20 cc of xylene. 360 mg of diethylaminoethyl chloride hydrochloride and 420 mg of potassium carbonate are added. and the mixture is heated at reflux at a bath temperature of for 8 hours. The xylene layer is subsequently washed 5 times with water. the combined aqueous phases are extracted once with ethyl acetate. and the combined organic phases are concentrated by evaporation in a vacuum. The residue is dissolved in 10 cc of methylene chloride and is converted into the hydrochloride with 0.6 cc of 5.8 N hydrochloric acid in ether. After removing the solvent in a vacuum, the hydrochloride is dissolved in 6 cc of methanol, diluted with 30 cc of distilled water and subsequently extracted 6 times with a total of 80 cc of ether. The purified aqueous solution of the hydrochloride is concentrated by evaporation in a vacuum at a bath temperature of approximately 30. The compound is homogeneous in accordance with thin layer chromatography on silica gel G in the system chloroform/methanol 1:2). The foamy product is dried in a vacuum over potassium hydroxide.

EXAMPLE 24 l4-Desoxyl 4-[ 3-2( dimethylaminoethylmercapto) phenylmercapto]acetoxymutilin [process c)] 0.57 g of dithioresorcin are dissolved in a solution of 46 mg of sodium in 5 cc of absolute ethanol in an atmosphere of nitrogen. A solution of 1.59 g of l4-desoxyl4-tosyloxyacetoxymutilin in 10 cc of ethylmethyl ketone is then added dropwise while stirring. After stirring for 2 hours at room temperature, the reaction mixture is evaporated to dryness in a vacuum. The residue is taken up in ethyl acetate, washed with water, dried over magnesium sulphate and concentrated by evaporation. The crude product is taken up in a solution of 74 mg of sodium in 15 cc of absolute ethanol, and after the addition of 0.94 g of dimethylaminoethyl chloride hydrochloride, the mixture is heated at reflux for 5 hours. The solvent is then removed in a vacuum and the residue is chromatographed on a silica gel column (grain size 0.05 to 0.2 mm) with a mixture of chloroform/methanol (1:2).

EXAMPLE 25 [process c)] The following compounds may be obtained in a manner analogous to that described in Example 23, using the corresponding amounts of the appropriate starting materials:

a. l4-desoxy-l4- 4-[3-(N-piperidino)propoxy] phenylmercapto aeetoxymutilin;

b. l4-desoxyl4-[4-( Z-diethylaminoethoxy )phenylmercapto] acetoxy-dihydromutilin;

c. l4-desoxyl 4-[ 2-( Z-diethylaminoethoxy )phenylmercapto] acetoxymutilin.

EXAMPLE 26 l4-Desoxy- 14- 2-(4-acetoxyethyl )piperazino] ethylmercaptoacetoxy} mutilin [process d)] 1.81 g of (4-hydroxyethyl-piperazino) ethanethiol are added to a solution of 0.35 g of sodium in 25 cc of absolute ethanol in an atmosphere of nitrogen. and a solution of 5.35 g of l4-desoxy-14-tosyloxyacetoxymutilin in 15 cc of ethylmethyl ketone is then added dropwise. After stirring at room temperature for 4 hours, the solvent is removed in a vacuum. the residue is taken up in 50 cc of ethyl acetate, whereby a partial interchange of ester radicals occurs. Separation of the acetylated from the non-acetylated product is effected by column chromatography on silica gel with chloroform/methanol (7:1 as eluant. The fraction which migrates more rapidly is converted into the hydrochloride with hydrochloric acid in ether. Softening point l37140.

The bis( hydrogen maleate) is produced in a manner analogous to that described in Example 1 1. MP. l42l44.

EXAMPLE 27 l4-Desoxy l 4- 2-( 4-acetoxyethyl )piperazino] ethylmercaptoacetoxy}mutilin [process d)] 10 cc of acetic anhydride are added to 4.0 g of 14- desoxyl 4-{[2-( 4-hydroxyethyl )piperazino]ethylmercaptoacetoxy) mutilin while cooling with ice, and the mixture is subsequently stirred at room temperature for hours. The mixture is then poured into 150 cc of cold water, is stirred for l hour and extracted thrice with ether. The ether phases are discarded, and the water phase is made alkaline with a N aqueous sodium hydroxide solution while cooling. The precipitated free base is taken up in ethyl acetate. After drying the solution over magnesium sulphate and retro ving the solvent by evaporation, the pure base is obtained.

EXAMPLE 28 l4-Desoxyl4- 2-(4-propionyloxyethyl) piperazino]ethylmercaptoacetoxy) mutilin [process d)] 0.50 g of l4-desoxy-l4- [2-(4-hydroxyethyl) piperazino]ethylmercaptoacetoxy mutilin are boiled at reflux in 5 cc of dichloromethane with 0.20 g of propionyl chloride for 2 hours. After cooling, the crystalline dihydrochloride is precipitated by the addition of hydrochloric acid in ether and dilution with absolute ether. The salt is filtered with suction and washed with ether. M.P. 182l87.

EXAMPLE 29 1 4-Desoxyl 4- 2-( 4-pivaloyloxyethyl) piperazino]ethylmercaptoacetoxy} mutilin [process d)] 0.50 g of l4-desoxy-l4- {[2-(4-hydroxyethyl)- piperazino]ethylmercaptoacetoxy} mutilin are boiled at reflux in 5 cc of dichloromethane with 0.15 g of pival- 0y] chloride for 4 hours. After cooling, the crystalline dihydrochloride precipitates by the addition of hydrochloric acid in ether and dilution with absolute ether. After filtering with suction, the dihydrochloride is washed with absolute ether for a short time and is dried in a vacuum. The compound hydrolyzes very readily to the starting material in the presence of water.

EXAMPLE 30 l 4-Desoxy- 14- {[2-( 4-benzoyloxyethyl) piperazino]ethylmercaptoacetoxy}mutilin [process d 0.50 g of l4-desoxy-l4-{[2-(4-hydroxyethyl)- piperazinolethylmercaptoacetoxy}mutilin are allowed to react in a manner analogous to that described in Examples 28 and 29 with 0.16 g of benzoyl chloride. The dihydrochloride is subsequently precipitated as described. Softening point l32l35.

EXAMPLE 31 14-Desoxyl4-l[2-(4-acetoxyethy1)piperazino] ethylmercaptoacetoxy} dihydromutilin [process d)] 0.50 g of l4-desoxy-l4-{[2-(4-hydroxyethyl) piperazino]ethylmercaptoacetoxyldihydromutilin are allowed to stand with 1.5 cc of acetic anhydride at room temperature for 2 hours, dilution is subsequently effected with 10 cc of water, and the mixture is stirred at room temperature for 1 hour in order to decompose the excess acetic anhydride. The solution is extracted thrice with ether. The dihydrochloride is precipitated from the concentrated solution with hydrochloric acid in ether. as described in Example 29. MP. l33-135.

PRODUCTION OF THE STARTING MATERIALS Example 32 l4-Desoxy- 14-tosyloxyacetoxy-dihydromutilin (for Examples 3, 12, 16b, 16e, [bf and 35) 6.10 g of p-toluenesulphochloride are added at once with vigorous stirring to a solution of 8.86 g of dihydropleuromutilin in 30 cc of dry pyridine at -l5', stirring is effected at l5 for 2 hours, and then at 0 for 1 hour. The mixture is then poured on ice water, and the product is taken up in methylene chloride. The organic phase is successively washed with ice water and with saturated sodium hydrogen carbonate solution while cooling. Drying over sodium sulphate and evaporation yield a thin layer chromatographically homogeneous product having a softening point of 7880.

EXAMPLE 33 l4Desoxy l 4-tosyloxyacetoxy-dihydromutilin (for Examples 3, 12, 16b, 16e, 16f and 35) 0.53 g of l4-desoxyl4-tosyloxyacetoxymutilin are hydrogenated in 10 cc of ethyl acetate with 0.10 g of 10 percent palladium charcoal as catalyst, at atmospheric pressure and room temperature. The calculated amount of hydrogen is taken up after approximately one hour. The catalyst is removed from the solution by filtration, and the solution is concentrated by evaporation in a vacuum. Softening point 78-80.

EXAMPLE 34 3-( Diethylaminoethylmercapto )thiophenol (for Example 13) A solution of 1.72 g of diethylaminoethyl chloride hydrochloride and 0.54 g of sodium methoxide in 10 cc of methanol and a solution of 2.09 g of potassium carbonate in 10 cc of water are added to 1.42 g of dithioresorcin. After the addition of 10 cc of xylene, the mixture is boiled at reflux for 8 hours. The reaction mixture is subsequently diluted with water and extracted thrice with ethyl acetate. 10 percent acetic acid is subsequently added to the water phase, until the oily precipitation is complete, extraction is again effected thrice with ethyl acetate, and the ethyl acetate solution is concentrated by evaporation after drying over magnesium sulphate. Bulb tube distillation (bath temperature at 0.5 mm Hg) yields the product as colourless oil which rapidly oxidizes in the air.

EXAMPLE 35 l4-Desoxy-14-(4-hydroxyphenylmercapto) acetoxydihydromutilin (for Example 25b) 6.00 g of l4-desoxyl 4-tosyloxyacetoxydihydromutimixture, the polymeric material is filtered off, washing is effected with benzene. the solvent is removed by evaporation and the product is distilled over a Vigreux column.

sodium sulphate and concentrated by evaporation in a vacuum. The compound crystallizes from chloroform- /hexane and has a MP. of 191-l94.

EXAMPLE 36 14- Desoxyl 4-( Z-hydroxyphenylmercapto) acetoxymutilin (for Example 250) 5.33 g of l4-desoxy-l4-tosyloxyacetoxymutilin are reacted with 1.57 g of Z-mercaptophenol and 0.25 g of sodium in 10 cc of absolute ethanol, as described in Example 35, and working up is effected in analogous manner. The compound crystallizes from chloroform and has a MP. of l50l52.

EXAMPLE 37 Pyrrolidinoethanethiol (for Example 14) EXAMPLE 38 Starting materials of formula IV (for Examples 9, l l, 16c, 16d and 16f) A solution of ethylene sulphide in benzene is heated in an autoclave to with a molar excess of a corresponding secondary amine. After cooling the reaction TABLE Molar ratio amine/ethylene Reaction sulphide time Compounds of formula IV BPJmm Hg 3 1 I 17 hours 2-[N.N-Bis-(Z-ethylhcxyl)aminolethanethiol l-I(J7/U.I 3 I 17 hours l-l-Hydroxyethyl-piperazino lethanethiol 97.5/U.| 4 l 22 hours [2-Morpholino)ethanethiol 46-4775 6: l 2| hours iHexahydrodH-azepinyl)ethancthiol 55.5%)!

cooling with ice and stirring. whereupon stirring is con- What is claimed is: tinued at room temperature for 5 hours. Working up is l. A compound of the formula:

R 2 OCOCH x-(cu N CH O 3 H effected by acidifying the reaction mixture with 10 perwherein cent acetic acid (pH 4.5) and subsequently concentrat- R is eth l or vin L ing by evaporation in a vacuum. The residue is taken up n is an integer from 2 to 5. in ethyl acetate, water is added and extraction is ef X is sulphur fected 4 times with ethyl acetate. The combined orand each of ganic phases are washed once with water. dried over R. and R is alk l of 1 to l0 carbon atoms, and pharmaceutically acceptable salts thereof.

2. A compound of claim 1, in which X is sulphur.

3. A compound of claim 2, in which R and R are each alkyl of l to 10 carbon atoms.

4. A compound of claim 3, in which n is 2 or 3. and R and R are each alkyl of l to 8 carbon atoms.

5. The compound of claim 1, which is l4-Desoxyl4- 2-dimethylaminoethyl) mercaptoacetoxylmutilin.

6. The compound of claim 1, which is l4-Desoxyl4- Z-dieth ylaminoethyl) mercaptoacetoxy1dihydromutilin.

7. The compound of claim 1, which is l4-Desoxy- 4- Z-diethylaminoethyl) mercaptoacetoxy]mutilin.

8. The compound of claim I, which is l4-Desoxyl4- 2-diisopropylaminoethyl) mercaptoacetoxy]mutilin.

9. The compound of claim 1, which is l4-Desoxyl 4- [(2-di-n-butylaminoethyl) mercaptoacetoxylmutilin.

10. The compound of claim 1, which is l4-Desoxyl 4-[ 2-dirnethylaminoethyl mercaptoacetoxy1dihydromutilin.

11. The compound of claim 1, which is l4-Desoxyl4- 3-dimethylaminop ropyl) mercaptoacetoxy lmutilin.

12. The compound of claim 1, which is l4-Desoxy- 14- 3-di-n-butylaminopropyl) mercaptoacetoxy]- mutilin.

13. The compound of claim 1, which is l4-Desoxy- 14-[(Z-di-n-butylaminoethyl) mercaptoacetoxy]dihy dromutilin.

14. The compound of claim 1, which is l4-Desoxy- 14- [2-di( Z-ethylhexyl aminoethyl]mercaptoacetoxy mutilin. 

1. A COMPOUND OF THE FORMULA:
 2. A compound of claim 1, in which X is sulphur.
 3. A compound of claim 2, in which R2 and R3 are each alkyl of 1 to 10 carbon atoms.
 4. A compound of claim 3, in which n is 2 or 3, and R2 and R3 are each alkyl of 1 to 8 carbon atoms.
 5. The compound of claim 1, which is 14-Desoxy-14-((2-dimethylaminoethyl) mercaptoacetoxy)mutilin.
 6. The compound of claim 1, which is 14-Desoxy-14-((2-diethylaminoethyl) mercaptoacetoxy)dihydromutilin.
 7. The compound of claim 1, which is 14-Desoxy-14-((2-diethylaminoethyl) mercaptoacetoxy)mutilin.
 8. The compound of claim 1, which is 14-Desoxy-14-((2-diisopropylaminoethyl) mercaptoacetoxy)mutilin.
 9. The compound of claim 1, which is 14-Desoxy-14-((2-di-n-butylaminoethyl) mercaptoacetoxy)mutilin.
 10. The compound of claim 1, which is 14-Desoxy-14-((2-dimethylaminoethyl) mercaptoacetoxy)dihydromutilin.
 11. The compound of claim 1, which is 14-Desoxy-14-)(3-dimethylaminopropyl) mercaptoacetoxy)mutilin.
 12. The compound of claim 1, which is 14-Desoxy-14-((3-di-n-butylaminopropyl) mercaptoacetoxy)mutilin.
 13. The compound of claim 1, which is 14-Desoxy-14-((2-di-n-butylaminoethyl) mercaptoacetoxy)dihydromutilin.
 14. The compound of claim 1, which is 14-Desoxy-14-((2-di-(2-ethylhexyl) aminoethyl)mercaptoacetoxy)mutilin. 